/**
 *    Copyright (C) 2025-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the Server Side Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
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 */

#include "mongo/db/query/compiler/ce/sampling/math.h"

#include "mongo/unittest/unittest.h"

#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kQueryCE

namespace mongo::ce {

TEST(ComputeNDV, EnsureNewtonRaphsonNDVDoesNotThrow) {
    // Rather than asserting on the value, we are simply ensuring the algorithm does not fail.
    for (size_t sampleSize = 2; sampleSize < 50; sampleSize++) {
        for (size_t sampleNDV = 1; sampleNDV <= sampleSize; sampleNDV++) {
            LOGV2(11158513,
                  "Testing Newton Raphson NDV with",
                  "sampleSize"_attr = sampleSize,
                  "sampleNDV"_attr = sampleNDV);
            auto res = newtonRaphsonNDV(sampleNDV, sampleSize).toDouble();
            LOGV2(11228301, "Newton Raphson NDV result", "res"_attr = res);
            ASSERT_GTE(res, sampleNDV);
        }
    }
}
}  // namespace mongo::ce
